7th Grade Science : Life Science

Study concepts, example questions & explanations for 7th Grade Science

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Example Questions

Example Question #1 : Life Science

What controls a cell's activities? 

Possible Answers:

Cell membrane 

Cell wall

Nuclear membrane

Nucleus 

Correct answer:

Nucleus 

Explanation:

To answer this question correctly, we need to know the function of the following organelles: 

The cell membrane controls movement of materials in and out of the cell, and acts as a barrier between the cell and the environment. 

The cell wall protects the cell, and allows water, oxygen, and carbon dioxide into and out of the cell. 

The nuclear membrane controls movement in and out of the nucleus.

The nucleus controls the cell's activities. 

Nucleus is the correct answer. 

Example Question #2 : Life Science

What protects the cell, and allows water, oxygen, and carbon dioxide into and out of the cell?

Possible Answers:

Cell membrane 

Nuclear membrane

Cell wall

Nucleus 

Correct answer:

Cell wall

Explanation:

To answer this question correctly, we need to know the function of the following organelles: 

The cell membrane controls movement of materials in and out of the cell, and acts as a barrier between the cell and the environment. 

The cell wall protects the cell, and allows water, oxygen, and carbon dioxide into and out of the cell. 

The nuclear membrane controls movement in and out of the nucleus.

The nucleus controls the cell's activities. 

Cell wall is the correct answer. 

Example Question #3 : Life Science

What controls movement of materials in and out of the cell, and acts as a barrier between the cell and the environment?

 

Possible Answers:

Cell wall

Cell membrane 

Nuclear membrane

Nucleus

Correct answer:

Cell membrane 

Explanation:

To answer this question correctly, we need to know the function of the following organelles: 

The cell membrane controls movement of materials in and out of the cell, and acts as a barrier between the cell and the environment. 

The cell wall protects the cell, and allows water, oxygen, and carbon dioxide into and out of the cell. 

The nuclear membrane controls movement in and out of the nucleus.

The nucleus controls the cell's activities. 

Cell membrane is the correct answer. 

Example Question #4 : Life Science

What controls movement in and out of the nucleus?

 

Possible Answers:

Cell membrane 

Nuclear membrane

Nucleus 

Cell wall

Correct answer:

Nuclear membrane

Explanation:

To answer this question correctly, we need to know the function of the following organelles: 

The cell membrane controls movement of materials in and out of the cell, and acts as a barrier between the cell and the environment. 

The cell wall protects the cell, and allows water, oxygen, and carbon dioxide into and out of the cell. 

The nuclear membrane controls movement in and out of the nucleus.

The nucleus controls the cell's activities. 

Nuclear membrane is the correct answer. 

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